Crushing apparatus



E. B. SYMONS CRUSHING APPARATUS mmh 17, "193i,

3 Sheets-Sheet l vOriginal Filed Sep-t. 19. 1927 kiq QB Srm QN hm March 17, 1931. E, B, SYMONS 1,796,413

CRUSHING APPARATUS Original Filed Sept. 19, 192'? 3 Sheets-Sheet 2 i l g w www wiww iii wk @www Ma'ch 17, '1931. E B SYMONS 1,796,413

y cRUsHING APPARATUS Original Filed Sept. 19, 1927 5 Sheets-Sheet 5 @www Patented Mar. 17, 1931 UNITED STATESv PATENT OFFICE EDG-AR B. SYMONS, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO N OBDBERG MANUFAC- TURIN G COMPANY, 0F MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN CRUSHING APPARATUS Original application led September 19, 1927, Serial No. 220,471. Divided and this application led January 9, 1930. serial No. 419,566.

My invention relates to impovements .in gyratory crushing machines of the type in which the material to be crushed is fed or al lowed to flow by gravity through a crushing zone between a normally fixed concave and a cone within the concave. One object of my invention is to provide a new and improved type of gyratory crusher adapted for fine crushing. Another object is to provide such a crusher wherein means are provided to C permit a very iine adjustment of the cone and concave. Another object is to provide adjusting means whereby the adjustment may be quickly and closely effected without stoppage of the crushing operation.

The present application is a. division of my copending application No. 220,471, led September 19, 1927.

Other objects will appear from time to time in the course of the specification and claims.

I illustrate my invention more or less diagrammatically in the accompanying drawings, whereinV Figure 1 is a top plan view;

Figure 2 is a section along the line 2 2 of Figure 1;

Figure 3 is a section along the line 3 3 of Figure 2;

Figure 4 is a detail.

Like parts are indicated by like symbols throughout the specification and drawings.

.A is a be-dl or support upon which rests a frame A1 provided at its base with a horizontal reinforcing flange A2 and strengthenedby the reinforcing anges or ribs A3. Projecting inwardly from the frame A1 are' the radial flanges or ribs or fra-me members A4, which join and support a central cylindrical housing B.

The housing or cylinder B is outwardly eX- panded adjacent its upper end as at B1. A suitable bronze bearing member or sleeve B2 penetrates the cylinder. The cylinder B is provided with a plurality of vertical channels B3 which are penetratedby corresponding ribs B4 formed on the exterior of the sleeve B. These serve to prevent the rotation ot the sleeveB2 in relation to the cylinder B. The Sleeve is loosely fitted to the cylinder at the upper part, the intervenin space being filled for example with the Babitt metal B. The bottom of the cylinder is closed, for example by the cap C which may be bolted as at C1 and which supports the lower bearing plate C2 upon which is positioned the ball race member C3 with the bearing balls C* which supports the plate C, peripherally beveled as at C and centrally aperturedas at D is an eccentrically a ertured sleeve resting on and in general con orming to the upper surface of the plate C5. It is provided atits upper end wit-h the outwardly projecting ring ear D1 enclosed within the space defined y the wall or housing B1. and projecting outwardly and downwardly about the upper edge of the housing or cylinder B. It is provided at one point of its periphery with the upwardly. hollow enlargement D2, adapted to receive a variable quantity of lead or other heavy material D3, adapted to serve as a counterweight. s The sleeve D is eccentrically apertured from top to bottom, the aperture D4 being downwardly tapered from top to bottom of the sleeve. D5 is a wear taking or bearing member of any suitable anti-friction material. The member D5 is transversely grooved or slotted from top to bottom as at D6 and is penetrated by apertures D1 in communication with apertures/DB in the thin wall of the eccentric sleeve D.

The sleeve of the housing B is at one side provided with the outwardly projecting shaft housing E, herein shown as integral with it. Mounted therewithin is the shaft supporting sleeve E1, bolted to the main frame, for example as at E2. The sleeve E1 is provided at. each end' with the anti-fric-A tiona-l bearings or bushings E3. Mounted in saidbearin s is the drive shaft E, to the inner end 0% which is keyed the bevel pinion E5 in mesh with the gear D1. Ee are oil grooves or passages. The outer bushing E3 in contacted by the ring E9, of angular crosssection, which in turn is surrounded by the plate or housing El, in bearing engagement therewith,-bolted to the outer end of the sleeve El. E12 is a pulley keyed to the shaft E". The top of the housing B is closed by the cover plate H which is formed or provided with the spherical bearing surface H1, which may be, if necessary, of any suitable anti-frictional material. Surrounding the bearing portion H1 is the circumferential well or sump H2 in the bottom of which are the oil discharge passages H3 which provide free drainage into the interior of the housing member B1. Beyond the sump is positioned the upwardly projecting circumferential flange H4 which is provided with a spherical bearing surface H5 concentric with the main spherical bearing surface H1.

Mounted in the eccentric D is the tapered shaft J, which includes the downwardly tapered portion J1 and the upwardly tapered portion J2. The shaft is further provided with an upper reduced cylindrical portion J1 and a screw threaded portion J 1 thereabove and is transversely slotted at its top as at M12. The shaft is further axially apertured as at J5 with the transverse upper passage J1 extending therefrom tothe outside of the shaft adjacent its top.

L is a crushing cone seated upon the tapered portion J2 of the shaft. The lower central portion of the cone is spherically formed and is herein shown as provided with a bronze spherical liner L1 having a circumferential upwardly turned flange L2 seated in a circumferential groove L5 in the cone. will be understood that the liner L1 conforms to the spherical bearing surface H1. Formed in the spherical lower face of the lcone is a circumferential oil duct L5 which is in communication, through the passage L, with the oil duct J 5 in the shaft J. Formed in the liner L1, aligned beneath the duct L5, are a plurality of oiling openings L1, herein shown as having downwardly and outwardly flared walls. a

L8 is a downwardly depending flange formed in the bottom of the cone, beyond the central spherical portion. Surrounding it is the circumferential groove L2 in which is positioned the upwardly projecting flange L11 upon the ring L11. It will be understood that the lower surface of the ring L11 is spherical, and conformsto the spherical surface H5 of the opposed ange H1. L12 is any suitable packing, which may be of felt.

The cone depends outwardly beyond the structure above described, as at L15 and terminatesin a downwardly turned curtain or apron L11.

The frame member A1 is provided about its upper edge with an outwardly projecting fiange P provided with the opposed beveled faces P1 and P2. Seated upon the flange is a vrin P3 generally conforming to said faces. P1 in icates a ring of channel iron outwardly surrounding the housing or frame memberA1. Passing throu h it and through the flange P and the mem er P1 are a plurality of secur- .of the screw W".

ing bolts or pins P5 upwardly headed as at P5 and provided with adjusting and lock nuts P1 beneath the channel ring P. P8 indicate spiral compression .springs coiled about said pins P5. It will be understood that the springs P8 are compressed between the flange P and the ring P4 and thereby exert, through the nuts P1 and the bolts P5 a downward compression against the ring P3, whereby it is held normally locked against the flange P.

rl'he ring P2 is screw threaded as at P1o to conform to the opposed screw threaded member Q1 on the concave supporting element Q.

Integral with the member P'1 are outwardly and upwardly projecting lugs T having a smaller outward lug T1. Each lug T is apertured to receive a shaft T2, to which is secured the ratchet wheel T3 and the lower portion TA1 of the ratchet clutch T5. T5 is a dog pivotally mounted to the lug T1 and held in engagement with the ratchet wheel T3 by the spring T10.

Tntegral with the member Q12 and extending outwardly, is a circular flange T14 which is provided with a plurality of apertures T15 adapted to receive upwardly projecting pins T15, which may engage the ring T11 of the chain T18, the chain being wound around and securely fastened to the shaft T2 as shown in Figure 2. I find it desirable, in large cone Crushers, to employ means for permitting or obtaining ne adjustment of the opposed screw threaded members or an accurate rotation of the member Q1 in relation to the opposed screw threaded member P3, to permit an accurate positioning of the locking means employed.

W indicates a lug vertically apertured as at W1, the lug projecting outwardly from the member P5. Two of such lugs project therefrom at diametrically opposed points. W2 indicates a pin seating in the aperture TV1 and connectedvto or formed integrally with a horizontal cylinder W2. Mounted in the cylinder is the screw W'1 with an inner flange `W5 abutting against the end W5 of the cylinder W3. The end W5 is apertured as at W1, to receive the' cylindrical extension Vv'g It in turn is externally screw threaded as at W11 to receive a head Wo which is locked thereupon and which is keyed thereto and which is provided with the handle W11, whereby the screw TV1 may be rotated. W12 indicates a second cylindrical sleeve adapted to penetrate the opposite end of the sleeve W1. The penetrating end is screwthreaded as at W12 for engagement with the screw W1. Its opposite end is provided with the adjacent lugs W14. The ends of said lugs are joined by the plate W15 which is pivoted as at W15 to one flange and is slotted as at W11 to engage the bolt W18 upon the other lug.

The useand operation of my device are as follows:

I illustrate `a cone crnsher of the general type shown forexalnple in my Patent No. 1,592,313. In a Crusher of this type, the adjustment of t-he closest approach otcone and concave becomes extremely important.

Since the material discharged is sized by such closest approach, apractically uniform sizing is obtained. However the size of product desired shifts from time to time, for example, in gravel pit work and it becomes de- Si'rable to obtain a quick adjustment of the device. I provide means for adjusting it without interrupting the operation of the machine. The. concave'Q carries a screw threaded upwardly projecting member Q1 which is in engagement with the opposed screw threaded portion P1o of a holding member P3 which normally rests on the upper edge of the frame A1. In order to ,effect a withdrawal of the concave from the cone I impart a rotary movement to the concave in relation to such holding lnember. I illustrate adjusting means. namely, for rotating the concave through the rotation of the vcrtically axised drum or drums T2. As the drum is rotatedit winds in any suitable Hexible member. for example, the chain T18. the terminal eyelet ,T17 which enga ges'one of the pins T18. Thus in response to rotation ot the drum T1, the concave is positively rotated and its screw threaded relation with its holding member moves it toward or away from the cone. Obviously the direction of rotation may be controlled at will. depending on the4 pointy at which the pin T16 is dropped or positioned in one of the apertures T15 to which the eyelet T17 is attached.

In order to prevent relative rotation of concave and holding member when adjustment is not desired, I may employ' the screws Q16. Tightening of the screws will securely lock the threaded members P3 and Q1.

It will be understood that when P3 and Q1 are locked together or held against rotary movement that they act as one member. The number and strength of the springs P1 is normally such as to hold the concave'm iixed relation to the cone. In case of abnormal crushing stresses, or when uncrush- K able material passes through the crushing zone, the springs serve as a .release means and permit the concave and, lts supporting member to tilt upwardly away from the cone. In order to obtain ,any desired adjustment I may employ for example the tensional members or chains T1s each of which is providedwith a loop'T17 which may be put upon any desired pin T16 whlch pm may be 'dropped into -any of the holes T15 positioned The opposite end of' about the flange T14. each chain T18 is secured upon the drum T2, .which drum may be' rotated as by the lever T which has an; overrunning connection therewith, including the member T. The ratchet teeth T3 in connection with the dog .T1 prevent undesired retrograde movement of the drum. Thus the operator may rotate t-he member Q1 in relation to the member P3. It will be understood that the member Q12, associated with the flange T14, in which the pins T1 are mounted, moves in unison with the member Q1 and causes its rotation, as through the screw Q16 as shown in Figure 2. In the larger size of cone Crushers this tensiofnal adjusting means is effective to impart relative movement to the opposed screwthreaded members P3 and Q1, but is insufficiently accurate to provide for an exact adjustment. In order to maintain the members P3 and Q1 against relative movement when adjusted I provide the telescopic locking structure above discussed, which includes the members 73 and YV and the screw IV* actuated by the crank 711. At the end of the member 712 is a jaw which includes the opposite jaw members W14 and the transverse connecting piece W15. VThe details of this structure are shown in Figure 4. When the member Q1 has been moved to the desired point of adjustment, preferably with one of the holes T15 in general alignment with the end of one of the members W12, the member.

IV may be moved, by rotation of the crank handle 111, until the jaw is aligned with an aperture T15. Thereupon 011e .of the pins T16 may be dropped through the jaw W14 t0 l penetrate said aperture T15, thus preventing further relative movement of the member Q1 in relationto the member P3.

I have illustrated, as in Figure 1, two of the said adjustable locking connections, but it will be realized that the number may be varied to suit the size and duty of the machine with which the locking device is employed. Furthermore, it will be understood that I may, by varying the size of the tele-4 ,scopic structure, lncrease its strength and employ it to impart adjusting rotation, if necessary, of the bowl in relation to the frame.

I claim:

1. In a gyratory Crusher, a frame, a crushing cone and means for gyrating it, a concave surrounding said cone and means for adjusting saidconcave, said means including opposed screw threaded members associated with the concave and the crusher frame, and means for imparting relative rotary movement to said opposed screw threaded members, including a tubular member and means for securin-git in relation to the concave, a second tubular member in telescopic relation with the iirst, and means for securing it in relation to the Crusher frame and means for imparting relative axial'movement to the two .tubular members. j

2. In a gyratory Crusher, a frame, a crushing cone and means for gyrating it, a

members, including a screw held against 1` movement in relation to one of said tubular members and in screw threaded relation with the other, and means for rotating it.

3. In a gyratory crusher, a frame, a crushing cone and means for gyrating it, a bowl surrounding said cone and means for adjusting said bowl in relation to said frame, said means including opposed screwthreaded members associated with bowl and frame,

Y means for imparting relative rotary movement to said opposed screwthreaded members, and adjustable securing means adapted to secure said screwthreaded members against rotation in relation to each other,-at any desired Arelative position of the opposed screwthreaded members, including a pair of relatively rotatable members in screwthreaded relation, means for securing one of said members in relation to the concavel and the other in relation to the crusher frame, and means for imparting relative rotation to said rotatable screwthreaded members.

4. In a gyratory Crusher, a frame7 a crushing cone and means for gyrating it, a bowl surrounding said cone and means for adjusting said bowl in relation to said frame, said means including opposed screwthreaded members associated with bowl and frame, means for imparting relative rotary movement to said opposed screwthreaded members, and adjustable securing means adapted to secure said screwthreaded members against rotation in relation to each other, at any4 desired relative position of the opposed screwthreaded members, includingr a pair of relatively rotatable members in screwthreaded relation, means for securing one of said members in relation to the concave andthe other in"relation to the crusher frame, and means for imparting relative rotation to said rotatable screwthreaded members, including a manual crank associated with one of said members. i

In a gyratory cruslier, a frame, a crushing cone and means for gyrating it, a bowl surrounding said cone and means for adjusting said bowl in relation to said frame, said means including opposed screwthreaded members associated with bowl and frame, means for imparting relative rotary movement to said opposed screwthreaded members, and adjustable securing means adapted to secure said screwthreadedl members against rotation in relation to each other, aty any desired relative position of the opposed screwthreaded members, said adjustable securing means including a plurality of telescopic members, one mounted upon the frame and the other secured in relation to the bowl, and means for imparting relative longitudinal movement to said telescopic members.

6. In a gyratory cruslier, a frame, a crushing cone and means for gyrating it, a bowl surrounding said cone and means for adjusting said bowl in relation to said frame, said means including opposed screwthreaded members associated with bowl and frame, means for imparting relative rotary movement to said opposed screwthreaded members, and adjustable securing means adapted to secure said screwthreaded members against rotation in relation to each other, at any desired relative position of the opposed screwthreaded members, said adjustable securing means including a plurality of telescopic members, one mounted upon the frame and the other secured in relation to the bowl, andmeans for imparting relative longitudinal movement to said telescopic members, said first mentioned telescopic member being pivotally mountedin relation to the frame.

7. In a gyratory Crusher,l a frame, a crushing cone and means for gyrating it, a bowl surrounding said cone and means for adjusting said bowl in relation to said frame, said means including opposed screwthreaded members associated with bowl and frame, means for imparting relative rotary movement to said opposed screwthreaded members, and adjustable securing means adapted to secure said screwthreaded members against rotation in relation to each other, at any desired relative position of the opposed screwthreaded members, including a telescopic member mounted upon the frame and adapted for locking engagement with the bowl, andxmeans for varying the effective length of said telescopic member.

8. In a gyratory Crusher, a frame, a crushing cone and means for gyrating it, a bowl surrounding said cone and means for adjusting said bowl in relation to said frame, said means including opposed screwthreaded members associated with bowl and frame, means for imparting relative rotary movement to said opposed screwthreaded members, and adjustable securing means adapted to secure said screwthreaded members against rotation in relation to each other, at any desired relative position of the opposed screwthreaded members, said securing means including a telescopic member mounted upon the frame, said member including a portion adapted to be aligned with an opposed port1on of the bowl, and a. locking member adapted to be interposed between said telescopic member and the bowl.

l9. In a gyratory crusher, a frame, a crushing cone and means for gyrating it, a bowl surrounding said cone and means for adjusting said bowl in relation to said frame, said means including opposed screwthreaded members associated with bowl and frame,

means for imparting relative rotary movement to said opposed screwthreaded members, and adjustable securing means adapted to secure said screwthreaded members against rotation in relation to each other, at any desired relative position of the opposed screwthreaded members, said securing means including a telescopic member mounted upon the frame, said member including aportion adapted to be aligned with an opposed portion of the bowl, and a locking pin adapted to penetrate a portion of said telescopic member, and an aligned aperture upon the bowl, the bowl being provided with a plurality of such apertures spaced about the periphery thereof.

10. In a gyratory crusher, a frame, a crushing cone and means for gyrating it, abowl surrounding said cone and means for adjusting said bowl in relation to said frame, said means including op osed` screwthreaded members associated with-,1' bowl and frame, and means for imparting relative rot-ary movement' to said opposed *screwthreaded members, and for locking them in position v:ses

when adjusted, including a telescopically extensible member mounted upon the frame, and a securing connection between said member and the bowl, one unit of said telescopically extensible member being mounted on may be secured to the concave and the other to the frame, and means for longitudinally extending and retracting said member, said member including a plurality of telescopic elements, and means for securing one of said elements to the concave and the other to the frame.

13. In a gyratory Crusher, a frame, a crushing cone and means for gyrating it, a concave surrounding said cone and means for adjusting said concave, said means including opposed screwthreaded members associated with the concave and the crushing frame, and means for imparting relatively rotary movement to said opposed screwthreaded members, including a longitudinally extensible member, one end of which may be secured to the concave and the other to the frame, and means for longitudinally extending and retracting said member, said extensible member includingan element pivotally secured to the frame and an additional element longitudinally movable in relation thereto, said last mentioned element having a fork on one end thereof and a closure for the fork, the concave being provided with an upstanding element adapted to penetrate between the arms of the fork, the closure for theend lof the fork being adapted to prevent relative lateral movement of the extensible elementV and' said upstanding element.-

Signed at Los Angeles, County of Los Angeles and State of California, this 18th day of December, 1929.

EDGAR B. SYMONS.

the frame and the other being adapted to be secured to the bowl, and means for imparting relative longitudinal movement to said units.

11. In a gyratory Crusher, a frame, a crushing cone and means for gyrating it, a bowl l surrounding said cone and means-for adjusting said bowl in relation to said frame, said means including opposed screwthreaded.-

members associated with bowl and frame, and means for'imparting relative rotary movement to, said opposed screwthreaded members, and-for locking them in position when' adjusted, including a longitudinally extensible member mounted upon the frame,

and a securing connection between said mems ber and the bowl, the\longitudinally extensible member bein adapted to receive a locking pin, the bowl tbeing apertured to receive said pin.

12. In a gyratory crusher, a frame, a crushing cone and means for gyrating it, a concave surrounding said cone and means for adjusting said conave,vsaid means including opposed screwthreaded members associated with the concave and the crushing frame, and means for imparting relatively rotary movement to said opposed screwthreaded members, including a longitudlnally extensible member, one endl of which l 

